Merge pull request #6962 from ecraven/moodle-master

apache-httpd: adding subservice moodle

nixos/modules/services/web-servers/apache-httpd/moodle.nix

@@ -0,0 +1,193 @@
+{ config, lib, pkgs, serverInfo, php, ... }:
+
+with lib;
+
+let
+
+  httpd = serverInfo.serverConfig.package;
+
+  version24 = !versionOlder httpd.version "2.4";
+
+  allGranted = if version24 then ''
+    Require all granted
+  '' else ''
+    Order allow,deny
+    Allow from all
+  '';
+
+  moodleConfig = pkgs.writeText "config.php"
+    ''
+      <?php
+      unset($CFG);
+      global $CFG;
+      $CFG = new stdClass();
+      $CFG->dbtype    = '${config.dbType}';
+      $CFG->dblibrary = 'native';
+      $CFG->dbhost    = '${config.dbHost}';
+      $CFG->dbname    = '${config.dbName}';
+      $CFG->dbuser    = '${config.dbUser}';
+      $CFG->dbpass    = '${config.dbPassword}';
+      $CFG->prefix    = '${config.dbPrefix}';
+      $CFG->dboptions = array(
+          'dbpersist' => false,
+          'dbsocket'  => false,
+          'dbport'    => "${config.dbPort}",
+      );
+      $CFG->wwwroot   = '${config.wwwRoot}';
+      $CFG->dataroot  = '${config.dataRoot}';
+      $CFG->directorypermissions = 02777;
+      $CFG->admin = 'admin';
+      ${optionalString (config.debug.noEmailEver == true) ''
+        $CFG->noemailever = true;
+      ''}
+
+      ${config.extraConfig}
+      require_once(dirname(__FILE__) . '/lib/setup.php'); // Do not edit
+    '';
+  # Unpack Moodle and put the config file in its root directory.
+  moodleRoot = pkgs.stdenv.mkDerivation rec {
+    name= "moodle-2.8.5";
+
+    src = pkgs.fetchurl {
+      url = "https://download.moodle.org/stable28/${name}.tgz";
+      sha256 = "1a159a193010cddedce10ee009184502e6f732e4d7c85167d8597fe5dff9e190";
+    };
+
+    buildPhase =
+      ''
+      ''; 
+
+    installPhase =
+      ''
+        mkdir -p $out
+        cp -r * $out
+        cp ${moodleConfig} $out/config.php
+      '';
+  };
+
+in
+
+{
+
+  extraConfig =
+  ''
+    # this should be config.urlPrefix instead of /
+    Alias / ${moodleRoot}/
+    <Directory ${moodleRoot}>
+      DirectoryIndex index.php
+    </Directory>
+  '';
+
+  documentRoot = moodleRoot; # TODO: fix this, should be config.urlPrefix
+
+  enablePHP = true;
+
+  options = {
+
+    id = mkOption {
+      default = "main";
+      description = ''
+        A unique identifier necessary to keep multiple Moodle server
+        instances on the same machine apart.
+      '';
+    };
+
+    dbType = mkOption {
+      default = "postgres";
+      example = "mysql";
+      description = "Database type.";
+    };
+
+    dbName = mkOption {
+      default = "moodle";
+      description = "Name of the database that holds the Moodle data.";
+    };
+
+    dbHost = mkOption {
+      default = "localhost";
+      example = "10.0.2.2";
+      description = ''
+        The location of the database server.
+      '';
+    };
+
+    dbPort = mkOption {
+      default = ""; # use the default port
+      example = "12345";
+      description = ''
+        The port that is used to connect to the database server.
+      '';
+    };
+
+    dbUser = mkOption {
+      default = "moodle";
+      description = "The user name for accessing the database.";
+    };
+
+    dbPassword = mkOption {
+      default = "";
+      example = "password";
+      description = ''
+        The password of the database user.  Warning: this is stored in
+        cleartext in the Nix store!
+      '';
+    };
+    
+    dbPrefix = mkOption {
+      default = "mdl_";
+      example = "my_other_mdl_";
+      description = ''
+        A prefix for each table, if multiple moodles should run in a single database.
+      '';
+    };
+
+    wwwRoot = mkOption {
+      type = types.string;
+      example = "http://my.machine.com/my-moodle";
+      description = ''
+        The full web address where moodle has been installed.
+      '';
+    };
+
+    dataRoot = mkOption {
+      default = "/var/lib/moodledata";
+      example = "/var/lib/moodledata";
+      description = ''
+        The data directory for moodle. Needs to be writable!
+      '';
+      type = types.path;
+      };
+
+    
+    extraConfig = mkOption {
+      default = "";
+      example =
+        ''
+        '';
+      description = ''
+        Any additional text to be appended to Moodle's
+        configuration file.  This is a PHP script.
+      '';
+    };
+
+    debug = {
+      noEmailEver = mkOption {
+        default = false;
+	example = "true";
+	description = ''
+	  Set this to true to prevent Moodle from ever sending any email.
+	'';
+	};
+    };
+  };
+
+  startupScript = pkgs.writeScript "moodle_startup.sh" ''
+  echo "Checking for existence of ${config.dataRoot}"
+  if [ ! -e "${config.dataRoot}" ]
+  then
+    mkdir -p "${config.dataRoot}"
+    chown ${serverInfo.serverConfig.user}.${serverInfo.serverConfig.group} "${config.dataRoot}"
+  fi
+  '';
+
+}